2006 rxp ecu help

Hi I'm rebuilding my rxp and before the motor s...t itself I had an issue with my oil been very thin due to alot of fuel in it I'm just wondering if anyone has had this problem as I've only had the ski for 2 weeks and 3 outings before it gave up it runs 60 pound injectors and a Melbourne seadoo centre ecu I've had it looked at and think that I should get the ecu sent away to check wats going on BUT my question is if I run a afr gauge it it reads fine there will be no need to send the ECU out correct ? As I will have the right afr

Thanks man Been busy putting it back together almost there yeah your right the ecu should be fine just got the innovate afr gauge with the 02 sensor I'm going to take my exhaust manifold to my machinist and tap it for the sensor then I'll be able to tell were I'm at